About People

Robert Cummings

Robert Cummings, RG

Senior Geologist

Rob serves as the Senior Geologist for the Saint Louis Office with more than 36 years’ experience. He has participated in numerous earthwork projects and has evaluated tunnel lining conditions, directed both contractors’ work and field investigations, and performed laboratory testing both on site and in Shannon & Wilson's laboratories. Rob has completed the OSHA-required 40-hour health and safety training course for work on hazardous waste sites. He is certified by the American Concrete Institute as a Grade II Concrete Field Testing Technician and has certified training on radiation safety and the use of nuclear moisture density gauges.

Prior to joining Shannon & Wilson, Rob was a geologist in the US Army Corps of Engineers' Geology and Instrumentation Section, during which time he worked on the installation, monitoring, and data reduction of instrumentation systems for two major dam-related projects.


  • BS, Geology, University of Missouri, 1979


  • Registered Geologist, Missouri
  • Professional Geologist, Arkansas


  • American Society of Civil Engineers
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